Direct red 81

CAS: 2610-11-9

Ref. IN-DA003OS5

Product Information

• Name: Direct red 81
• Synonyms: C. I. Direct Red 81, Sirius Red 4B, Solaminrot 4B, Chlorantine Fast Red 5B, Solaminrot 4B, Sirius Red 4B, Chlorantine Fast Red, C.I. Direct Red 81 disodium salt, Direct Fast Red 5B, Saturn Red B, Solar Red B, Durazol Red 2B, Fenaluz Red 4B, Suprazo Red 4B, Direct red y81, Sumilight Red 4B, Helion Red 8B, Solius Red 4B, Dialuminous Red 4B, Benzanil Fast Red K, Diazo Light Red 8B, Direct Fast Red 2S, Diazol Light Red 8B, Direct Light Red 4B, Direct Light Red 8B, Chloramine Fast Red K, Chrome Leather Red 5B, Pheno Fast Scarlet 9B, Tetramine Fast Red 8B, Direct Lightfast Red 2S, Chloroantine fast red 5B, C.I. Direct Red 81, Diaphtamine Light Red 4B, Tertrodirect Fast Red 5B, Pryamoi krasnyi svetoprochnyi 2S, C.I. Direct Red 81, disodium salt, Disodium 7-benzamido-4-hydroxy-3-((4-((4-sulphonatophenyl)azo)phenyl)azo)naphthalene-2-sulphonate, 2-Naphthalenesulfonic acid, 7-(benzoylamino)-4-hydroxy-3-((4-((4-sulfophenyl)azo)phenyl)azo)-, disodium salt, 2-Naphthalenesulfonic acid, 7-(benzoylamino)-4-hydroxy-3-((4-((4-sulfophenyl)azo)phenyl)azo)-,disodium salt, 2-Naphthalenesulfonic acid, 7-(benzoylamino)-4-hydroxy-3-(2-(4-(2-(4-sulfophenyl)diazenyl)phenyl)diazenyl)-, sodium salt (1:2), 2-Naphthalenesulfonic acid, 7-(benzoylamino)-4-hydroxy-3-[2-[4-[2-(4-sulfophenyl)diazenyl]phenyl]diazenyl]-, sodium salt (1:2), Direct Red 81, Dye content 50 %, 2-Naphthalenesulfonic acid, 7-(benzoylamino)-4-hydroxy- 3-[[4-[(4-sulfophenyl)azo]phenyl]azo]-, disodium salt, 7-(Benzoylamino)-4-hydroxy-3-((4-((4-sulphophenyl)azo)phenyl)azo)naphthalene-2-sulphonic acid, sodium salt, 2-Naphthalenesulfonicacid,7-(benzoylamino)-4-hydroxy-3-[2-[4-[2-(4-sulfophenyl)diazenyl]phenyl]diazenyl]-,sodium salt (1:?), 3,4-Dihydro-3-[2-[4'-(sodiosulfo)azobenzene-4-yl]hydrazono]-4-oxo-7-(benzoylamino)-2-naphthalenesulfonic acid sodium salt, dipotassium 7-benzamido-4-hydroxy-3-(2-{4-[2-(4-sulfonatophenyl)diazen-1-yl]phenyl}diazen-1-yl)naphthalene-2-sulfonate, dipotassium 7-benzamido-4-oxo-3-(2-{4-[2-(4-sulfonatophenyl)diazen-1-yl]phenyl}hydrazin-1-ylidene)naphthalene-2-sulfonate, disodium (3E)-7-benzamido-4-oxo-3-[[4-(4-sulfonatophenyl)azophenyl]hydrazono]naphthalene-2-sulfonate, disodium (3Z)-7-benzamido-4-oxo-3-[[4-[(4-sulfonatophenyl)diazenyl]phenyl]hydrazinylidene]naphthalene-2-sulfonate, disodium 7-benzamido-4-hydroxy-3-({4-[(4-sulfonatophenyl)diazenyl]phenyl}diazenyl)naphthalene-2-sulfonate, sodium 7-benzamido-4-hydroxy-3-((E)-(4-((E)-(4-sulfonatophenyl)diazenyl)phenyl)diazenyl)naphthalene-2-sulfonate, 7- -4-hydroxy-3-[[4-[ azo]phenyl]azo]naphthalene-2-sulphonicacid,sodiumsalt
• Brand: Indagoo

Chemical properties

• Molecular weight: 675.5994
• Formula: C₂₉H₁₉N₅Na₂O₈S₂
• Purity: 99%
• Color/Form: Solid
• InChI: InChI=1S/C29H21N5O8S2.2Na/c35-28-25-15-12-23(30-29(36)18-4-2-1-3-5-18)16-19(25)17-26(44(40,41)42)27(28)34-33-21-8-6-20(7-9-21)31-32-22-10-13-24(14-11-22)43(37,38)39;;/h1-17,35H,(H,30,36)(H,37,38,39)(H,40,41,42);;/q;2*+1/p-2
• InChI key: UFUQRRYHIHJMPB-UHFFFAOYSA-L